This Tommy Bahama button-up shirt is the epitome of island style. short sleeves, one chest pocket and a collared neckline. It has a relaxed fit and is machine washable for easy care. Perfect for casual occasions or travel, this shirt is a must-have for any men's clothing collection. The size is XL and the chest measures 25 inches flat across below the sleeves and the back is 31 inches from the base of the collar to the bottom. and is 100% Silk